Haematocin, a new antifungal diketopiperazine produced by Nectria haematococca Berk. et Br. (880701a-1) causing nectria blight disease on ornamental plants.

Action Spectrum of the Photoinduced Sexual Stage in the Fungus Nectria haematococca Berk. and Br. var cucurbitae (Snyder and Hansen) Dingley.

An action spectrum was determined for the photoinduced formation of perithecia in a homothallic strain of Nectria haematococca Berk. and Br. var. cucurbitae (Snyder and Hansen) Dingley. Dose-response curves for perithecial formation were obtained from 340 to 510 nanometers at 10-nanometer intervals. Radiation longer than 510 nanometers was not effective for inducing perithecial formation. The a...

A new deoxyfusarubin produced by the fungus Nectria haematococca. Synthesis of the two isomeric deoxyanhydronaphthopyranones from toralactone.

between anhydrofusarubin lactol and ammoniawas shown on an other side to be responsible for the formation of the antibiotic bostrycoidin2). This 2-aza-anthraquinone was accompanied by a 6-0demethyl-5-deoxy derivative in a selected mutant of N. haematococca^. The structural variations observed in the various naphthopyranones result from subsequent methylations or hydroxylations of the original h...

Genes determining pathogenicity to pea are clustered on a supernumerary chromosome in the fungal plant pathogen Nectria haematococca.

Three genes that contribute to the ability of the fungus Nectria haematococca to cause disease on pea plants have been identified. These pea pathogenicity (PEP) genes are within 25 kb of each other and are located on a supernumerary chromosome. Altogether, the PEP gene cluster contains six transcriptional units that are expressed during infection of pea tissue. The biochemical function of only ...

The Journal of Antibiotics 6-0-demethyl-5-deoxyfusarubin and Its Anhydro Derivative Produced by a Mutant of the Fungus Nectria Haematococca Blocked in Fusarubin Biosynthesis

Diversity of endophytic fungi from roots of Panax ginseng and their saponin yield capacities

Endophytes of medicinal plants have the capacity to synthesis same or similar active substances with their hosts. To investigate the diversity and capacity to produce saponins of endophytic fungi of Panax ginseng, thirty-eight strains of were isolated. Polymerase chain reaction (PCR) and sequencing were used to identify the isolates, and saponins concentrations in the cultures were measured. Ag...